Fait général: 25561 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 25561 is an unremarkable number.
Culture générale: 25561 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: December 24th is the day in 563 that the Byzantine church Hagia Sophia in Constantinople is dedicated for the second time after being destroyed by earthquakes.